SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2fd7213b5335130a0817d5c249a90d93ad4f198cc873d3d1ef59c3b7bcf3482b' 
  AND token = 'jqi1JattwIHcMTgNemROffrVI/p3z3w1Fisq7s6UW6M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Impossible WHERE noticed after reading const tables